He has a special interest in regenerative medicine, with the aim of eliminating pain and delaying the surgical treatment of arthritic and damaged, especially larger joints. Performs regenerative procedures to prevent further damage to injured ligaments, tendons and muscles with faster healing and strengthening. Depending on the need and availability of the mobility system, the examination can be supplemented by an ultrasound examination. It applies combinations of different regenerative procedures. These are basically injections, which are given by standard procedures or with ultrasound control. He uses various techniques of prolotherapy and therapy with stem cells and PRP. Specializing abroad in the area of feet and ankles. Primarius Irha cures all orthopedic deformities and ailments in the feet. Of closer interest are mini-invasive (HyProCure) surgeries for so-called "lowered feet" and "lipofilling" for pain under the front of the foot due to the disappearance of adipose tissue, the so-called "Fat Pad Atrophy", the feeling of "walking on stones". He graduated from the Faculty of Medicine in Zagreb in 1983, passed the specialist exam in orthopedics in 1994, received his master's degree in 1998, and received his master's degree in 2003. Scholarships and additional training in Denmark, France, Germany and England. Member of national professional societies in Croatia, long-term member of the Polish Foot and Ankle Society PFAS, member of international societies: European Society of Pediatric Orthopedics EPOS and European Society of Foot and Ankle EFAS. So far, he has had several oral presentations and posters at congresses in Croatia and at international congresses, as well as published professional and scientific articles.